Test for integer value

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Corey Washburn
Corey Washburn 2018-9-28
编辑： Bruno Luong 2018-9-29
I am trying to make a battleship styled game, one of the parts involve getting a set of user input 'firing coordinates', which I then need to test to make sure it is an integer value 1 through 10, what function can I use to test that it is an integer?
*edit: I am looking for a logical operator or else condition that can specify a non integer input.

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采纳的回答

James Tursa
James Tursa 2018-9-28
编辑：James Tursa 2018-9-28
See the following:
doc fix
doc ceil
doc floor
doc round
E.g., for a scalar x
if( round(x) == x )
% x is an integer
  2 个评论
Corey Washburn
Corey Washburn 2018-9-28
I am not looking for a way to make a decimal value into an integer (round 4.3 to 4) I am looking for a logical operator that is false if the input is not an integer value.
James Tursa
James Tursa 2018-9-29
That's exactly what my code does ...

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更多回答（2 个）

Bruno Luong
Bruno Luong 2018-9-29
编辑：Bruno Luong 2018-9-29
Perhaps no better no worse than James's solution just different
iswholenumber = mod(x,1)==0
Bruno Luong
Bruno Luong 2018-9-29
编辑：Bruno Luong 2018-9-29
according to my test slightly faster, but need to assume the smaller range of x of be working:
x == int32(x)

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